[tfkit] Support encode (#3007)

This commit extends tfkit with encode command which allows users to
convert a textual graph def into a binary form.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>

diff --git a/contrib/tfkit/src/EncodeCommand.cpp b/contrib/tfkit/src/EncodeCommand.cpp
new file mode 100644 (file)
index 0000000..0ad95e3
--- /dev/null
+++ b/contrib/tfkit/src/EncodeCommand.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "EncodeCommand.hpp"
+
+#include <tensorflow/core/framework/graph.pb.h>
+
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/io/zero_copy_stream_impl.h>
+#include <google/protobuf/text_format.h>
+
+#include <iostream>
+
+int EncodeCommand::run(int, const char *const *) const
+{
+  tensorflow::GraphDef graph_def;
+
+  // Load text from standard input
+  google::protobuf::io::IstreamInputStream is{&std::cin};
+
+  if (!google::protobuf::TextFormat::Parse(&is, &graph_def))
+  {
+    std::cerr << "ERROR: Failed to parse prototxt" << std::endl;
+    return 255;
+  }
+
+  // Write binary into standard output
+  google::protobuf::io::OstreamOutputStream os{&std::cout};
+  google::protobuf::io::CodedOutputStream coded_os{&os};
+
+  if (!graph_def.SerializeToCodedStream(&coded_os))
+  {
+    std::cerr << "ERROR: Failed to serialize" << std::endl;
+    return 255;
+  }
+
+  return 0;
+}

diff --git a/contrib/tfkit/src/EncodeCommand.hpp b/contrib/tfkit/src/EncodeCommand.hpp
new file mode 100644 (file)
index 0000000..5676bd6
--- /dev/null
+++ b/contrib/tfkit/src/EncodeCommand.hpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __ENCODE_COMMAND_H__
+#define __ENCODE_COMMAND_H__
+
+#include <cli/Command.h>
+
+struct EncodeCommand final : public cli::Command
+{
+  int run(int argc, const char *const *argv) const override;
+};
+
+#endif // __ENCODE_COMMAND_H__

diff --git a/contrib/tfkit/src/Main.cpp b/contrib/tfkit/src/Main.cpp
index 0e1566c..3dfd580 100644 (file)
--- a/contrib/tfkit/src/Main.cpp
+++ b/contrib/tfkit/src/Main.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include "EncodeCommand.hpp"
 #include "DecodeCommand.hpp"
 
 #include <cli/App.h>
@@ -23,6 +24,7 @@ int main(int argc, char **argv)
 {
   cli::App app{argv[0]};
 
+  app.insert("encode", stdex::make_unique<EncodeCommand>());
   app.insert("decode", stdex::make_unique<DecodeCommand>());
 
   return app.run(argc - 1, argv + 1);